Elevated annual mean NO2 concentrations at residential properties alongside main arterial routes, which located within Hafod, Sketty and Fforestfach area.

An area encompassing a number of properties along Clifton Street, Whilte Street, Bartlett Street, Nantgarw Road and Ton-Y-Felin Road in Caerphilly.

Area covering even numbered properties from 350 to 388 Malpas Rd, the pavement in front of those properties out to the centre line of the road.

An area encompassing all the properties on the west side of Partidge Road, Llwynypia from 103C to 128, including the Post Office.

An area surrounding Lakeside Court, Penstowe.

An area in Nantgarw encompassing the properties at Graig View along the western edge of the A468.

All roadside properties along Gelliwastad Road and Morgan Street west to the junction of Gelliwastad Road and Gelliwastad Grove.

An area encompassing properties along both sides of East Road, Tylorstown, between numbers 7 and 254 to the north and number 31 to the south.

An area encompassing properties along High Street and Duffryn Street to the junction with with Brook Street in Ferndale.

All roadside properties along Pontshonnorton Road from ‘Norton Bridge Methodist Church’ to No. 51 Pontshonnorton Road